List of Seattle megaprojects
This is a list of megaprojects in the Seattle area. For this list, a megaproject follows the often cited definition of $1 billion (2017 dollars) or more.
| Name | Type | Status | Cost | Notes |
|---|---|---|---|---|
| Sound Transit 3 | Transit | In progress | $54 billion[1] | Divided between several projects, to open between 2024 and 2041 |
| Vancouver B.C.–Seattle–Portland high-speed railway | Transit | Proposed | $24–$42 billion[2][3] | Initiative of the Pacific Coast Collaborative between state and provincial governments |
| State Route 520 bridge replacement and corridor program | Road | In progress | $4.56 billion[4] | New bridge opened in April 2016, rest of corridor anticipated to be complete by 2029 |
| Alaskan Way Viaduct replacement tunnel | Road tunnel | Completed 2019 | $4.25 billion (2009 est.)[5] | |
| Amazon headquarters, Seattle | Office buildings | In progress | $4 billion[6] | |
| East Link Extension | Transit line | In progress | $3.7 billion[7] | Scheduled to open in 2023 |
| Lynnwood Link Extension | Transit line | In progress | $2.9 billion[8] | Scheduled to open in 2024 |
| Interstate 405 (Eastside) improvements | Road | In progress | More than $2.8 billion[9] | 2003 Nickel and 2005 Transportation Partnership Account: $1.5 billion; 2015 Connecting Washington package: $1.3 billion |
| Central Link, Seattle and Tukwila | Transit line | Completed 2009 | $2.44 billion[10] | |
| Spring District, Bellevue | Urban development | In progress | $2.3 billion[11] | Scheduled to open in phases from 2017 to 2023 |
| Puget Sound Gateway (SR 167 and SR 509) | Road | In progress | $1.989 billion[12] | |
| Northgate Link Extension | Transit tunnel | In progress | $1.9 billion[13] | Scheduled to open in 2021 |
| Brightwater Tunnel | Sanitation infrastructure | Completed 2011 | $1.8 billion[14] | First billion-dollar tunnel in Seattle |
| University Link tunnel | Transit tunnel | Completed 2012 | $1.7 billion[15] | Completed $200 million under budget. Central Link light rail service began in 2016. |
| Interstate 5 HOV lanes in Tacoma and Fife | Road expansion | In progress | $1.6 billion[16] | Scheduled to be complete in 2022 |
| Yesler Terrace redevelopment | Urban development | In progress | $1.5 billion[17] | May increase to $1.7 billion |
| Lincoln Square expansion, Bellevue | Urban development | Completed late 2017 | $1.2 billion[18] | |
| Seattle–Tacoma International Airport third runway | Airport infrastructure | Completed 2008 | $1.1 billion[19] | Does not include $200 million in soundproofing for schools |
| Seattle seawall replacement | Shoreline infrastructure | Completed 2017 | $1.07 billion (2014 estimate)[20] | |
| Mount Baker Tunnel | Road tunnel | Completed 1986 | Over $1 billion[21] | Earliest billion-dollar project on this list |
| Point Ruston | Urban development | In progress | $1 billion[22] | |
| Snoqualmie Ridge | Master-planned community | Completed 2018 | $1 billion[23] | Made suburb of Snoqualmie the fastest growing city in Washington (2010) |
| Hewitt Avenue Trestle replacement (U.S. Route 2, Everett) | Road bridge | Proposed | $620 million to $2 billion[24] | |
| Puget Sound salmon recovery–culvert replacement | Stream restoration | In progress | $3.7 billion[25] | Began in 1991, expanded by June 2018 U.S. Supreme ruling in favor of tribal fisheries rights. Projected to continue through 2030.[25] |
Other Washington state megaprojects
Notable Washington state megaprojects outside the immediate Seattle area include the following:
- Hanford cleanup $113.6 billion
- Hanford Vitrification Plant $12 to $16.8 billion[26]
- WNP-3 and WNP-5 nuclear power plants up to $24 billion estimated to complete (cancelled, WPPSS default)
- Grand Coulee Dam $5.541 billion in 2017 dollars[27]
- Third Powerplant (completed 1980) $2.002 billion in 2017 dollars[27]
- North Spokane Corridor (freeway): $1.49 billion[28]
- Lower Snake River Wind Project phase I and II (Tucannon River Wind Farm) $1.33 billion[29][30]
- Interstate 90 widening near Snoqualmie Pass: $1 billion[31]
References
- Beekman, Daniel (June 23, 2016). "Sound Transit puts $54 billion light-rail plan on ballot". The Seattle Times. Retrieved October 22, 2016.
- Penner, Derrick (March 16, 2018). "Horgan puts up $300,000 to keep concept of Vancouver-Seattle-Portland high-speed rail alive". Vancouver Sun. Retrieved March 17, 2018.
- CH2M Hill (February 2018). "Ultra High‐Speed Ground Transportation Study final report" (PDF). Washington State Department of Transportation. p. 5-12. Retrieved March 17, 2018.
- "SR 520 – Budget and Performance". Washington State Department of Transportation. Retrieved April 17, 2016.
- Lindblom, Mike; Sara Jean Green (January 13, 2009). "Gregoire announces tunnel plans; car-tab taxes might help pay for it". The Seattle Times. Archived from the original on January 15, 2009.
- Day, Matt (January 26, 2018). "Take a look inside Amazon's Spheres as they get set to open". The Seattle Times. Retrieved February 5, 2018.
- Lindblom, Mike (March 23, 2017). "Price tag zooms up for light rail across I-90 bridge: $225 million more needed". The Seattle Times. Retrieved February 5, 2018.
- Lindblom, Mike (August 24, 2017). "Sound Transit's Lynnwood extension running $500M over budget". The Seattle Times. Retrieved February 5, 2018.
- "I-405 Corridor Program". WSDOT. Retrieved February 5, 2018.
- Lindblom, Mike (June 24, 2011). "Light-rail contract dispute is resolved". The Seattle Times. p. B1. Retrieved October 3, 2019.
- Crowe, Melissa (May 6, 2016). "These are the 25-largest construction projects in the Puget Sound region". Puget Sound Business Journal. Retrieved November 30, 2016.
- "Puget Sound Gateway Program: Funding and Phasing Subcommittee Meeting Summary" (PDF). Washington State Department of Transportation. October 4, 2017. Retrieved February 5, 2018.
- Lindblom, Mike (August 17, 2016). "Underground sneak peek: Northgate-UW tunnel dig almost finished". The Seattle Times. Retrieved February 5, 2018.
- Denise Whitaker (September 22, 2011). "Brightwater treatment plant set to open Saturday". Archived from the original on December 29, 2011.
- Daniels, Chris; Green, Josh; Courtney, Ricky (March 19, 2016). "University Link light rail opens". KING-TV. Retrieved March 20, 2016.
- "Tacoma/Pierce County HOV Program Annual Report" (PDF). Washington State Department of Transportation. August 2017. Retrieved February 5, 2018.
- Beekman, Daniel (July 11, 2016). "Yesler Terrace transition: Many families leave area". The Seattle Times. Retrieved February 5, 2018.
- Patti Payne (December 21, 2016). "Kemper Freeman: Lincoln Square expansion readies for 2017 rollout with new corporate tenants, restaurants". Puget Sound Business Journal.
- Walt Crowley with research by Daryl McClary and Paula Becker (June 21, 2003), Sea-Tac International Airport: Third Runway Project, HistoryLink
- Daniel Beekman (September 29, 2014). "With costs up, mayor wants to roll back Seattle waterfront plan". The Seattle Times. Retrieved February 5, 2018.
- Holloway, Lee J; Kjerbol, Georg (1987). Kaplan, Elizabeth W. (ed.). "Completion of World's Largest Soft-Ground Tunnel Bore" (PDF). Transportation Research Record. US National Research Council Transportation Research Board. 1150: 1–10. ISSN 0361-1981.
- Gillie, John (August 15, 2014). "Point Ruston development files claims totaling more than $150 million against Ruston". The News Tribune. Tacoma, Washington. Retrieved February 5, 2018.
- Ellis E. Conklin (April 21, 2015). "How the Tech Sector's Moneyed Masses Reshaped a Historic Logging Village". Seattle Weekly.
- John H. White, NWR Assistant Regional Administrator (January 18, 2018). "US 2 westbound trestle funding finance study" (PDF). Washington State Transportation Commission.
- Aaron Kunkler (July 13, 2018), "Fish culverts ruling will increase price tag for the state: The state will be on the line for $3.7 billion for fish culvert replacements.", Kirkland Reporter
- William F. Hamel (March 22, 2017). "Hanford Waste Treatment and Immobilization Plant – Rebaseline and Contract Modification Proposal Process / 2017 Project Management Workshop" (PDF). United States Department of Energy Office of River Protection. Retrieved February 5, 2018.
- Lynne Brougher (March 29, 2017). "Grand Coulee FAQ". U.S. Bureau of Reclamation Public Affairs. Retrieved February 5, 2018.
- "US 395 - North Spokane Corridor: Annual Mega-Project Report" (PDF). Washington State Department of Transportation. September 2015. Retrieved February 5, 2018.
- Washington's Largest Wind-Power Site Begins Generating Electricity, Puget Sound Energy, February 29, 2012
- "PGE completes Tucannon River Wind Farm", Power Engineering, December 16, 2014
- Prager, Mikle (April 17, 2017). "Construction again slowing traffic over Cascades on I-90". The Spokesman-Review. Retrieved February 5, 2018.
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